Using this Apidura hydration bladder is a breeze. First, make sure it's properly attached to the accessory clip in your frame pack for stability. To fill it up, you don't need to remove it from the pack - just open the filling port and pour in water. The 1.2m detachable hose should be routed through the hydration port to your cockpit. That way, you can reach it easily while riding. When it comes to maintenance, after each use, empty the bladder and let it dry completely. This helps prevent mold and bad odors. It's also a good idea to clean it regularly with mild soap and water. And remember, this bladder is PVC - free and certified safe to EU and FDA standards, so you can use it with confidence.